windows/syscolor.c

   1 /*
   2  * Support for system colors
   3  *
   4  * Copyright  David W. Metcalfe, 1993
   5  * Copyright  Alexandre Julliard, 1994
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <assert.h>
  23 #include <stdarg.h>
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "wine/winbase16.h"
  31 #include "wine/winuser16.h"
  32 #include "winuser.h"
  33 #include "wownt32.h"
  34 #include "winreg.h"
  35 #include "local.h"
  36 #include "user.h"
  37 #include "gdi.h" /* sic */
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(syscolor);
  41
  42 static const char * const DefSysColors[] =
  43 {
  44     "Scrollbar", "192 192 192",      /* COLOR_SCROLLBAR           */
  45     "Background", "0 128 128",       /* COLOR_BACKGROUND          */
  46     "ActiveTitle", "0 0 128",        /* COLOR_ACTIVECAPTION       */
  47     "InactiveTitle", "128 128 128",  /* COLOR_INACTIVECAPTION     */
  48     "Menu", "192 192 192",           /* COLOR_MENU                */
  49     "Window", "255 255 255",         /* COLOR_WINDOW              */
  50     "WindowFrame", "0 0 0",          /* COLOR_WINDOWFRAME         */
  51     "MenuText", "0 0 0",             /* COLOR_MENUTEXT            */
  52     "WindowText", "0 0 0",           /* COLOR_WINDOWTEXT          */
  53     "TitleText", "255 255 255",      /* COLOR_CAPTIONTEXT         */
  54     "ActiveBorder", "192 192 192",   /* COLOR_ACTIVEBORDER        */
  55     "InactiveBorder", "192 192 192", /* COLOR_INACTIVEBORDER      */
  56     "AppWorkspace", "128 128 128",   /* COLOR_APPWORKSPACE        */
  57     "Hilight", "0 0 128",            /* COLOR_HIGHLIGHT           */
  58     "HilightText", "255 255 255",    /* COLOR_HIGHLIGHTTEXT       */
  59     "ButtonFace", "192 192 192",     /* COLOR_BTNFACE             */
  60     "ButtonShadow", "128 128 128",   /* COLOR_BTNSHADOW           */
  61     "GrayText", "128 128 128",       /* COLOR_GRAYTEXT            */
  62     "ButtonText", "0 0 0",           /* COLOR_BTNTEXT             */
  63     "InactiveTitleText", "192 192 192",/* COLOR_INACTIVECAPTIONTEXT */
  64     "ButtonHilight", "255 255 255",  /* COLOR_BTNHIGHLIGHT        */
  65     "3DDarkShadow", "0 0 0",         /* COLOR_3DDKSHADOW          */
  66     "3DLight", "224 224 224",        /* COLOR_3DLIGHT             */
  67     "InfoText", "0 0 0",             /* COLOR_INFOTEXT            */
  68     "InfoBackground", "255 255 225", /* COLOR_INFOBK              */
  69     "AlternateButtonFace", "180 180 180",  /* COLOR_ALTERNATEBTNFACE */
  70     "HotTrackingColor", "0 0 255",         /* COLOR_HOTLIGHT */
  71     "GradientActiveTitle", "16 132 208",   /* COLOR_GRADIENTACTIVECAPTION */
  72     "GradientInactiveTitle", "181 181 181" /* COLOR_GRADIENTINACTIVECAPTION */
  73 };
  74
  75
  76 #define NUM_SYS_COLORS     (COLOR_GRADIENTINACTIVECAPTION+1)
  77
  78 static COLORREF SysColors[NUM_SYS_COLORS];
  79 static HBRUSH SysColorBrushes[NUM_SYS_COLORS];
  80 static HPEN   SysColorPens[NUM_SYS_COLORS];
  81
  82
  83 /*************************************************************************
  84  * SYSCOLOR_MakeObjectSystem
  85  *
  86  * OK, now for a very ugly hack.
  87  * USER somehow has to tell GDI that its system brushes and pens are
  88  * non-deletable.
  89  * We don't want to export a function from GDI doing this for us,
  90  * so we just do that ourselves by "wildly flipping some bits in memory".
  91  * For a description of the GDI object magics and their flags,
  92  * see "Undocumented Windows" (wrong about the OBJECT_NOSYSTEM flag, though).
  93  */
  94 static void SYSCOLOR_MakeObjectSystem( HGDIOBJ16 handle, BOOL set)
  95 {
  96     static WORD heap_sel = 0;
  97     LPWORD ptr;
  98
  99     if (!heap_sel) heap_sel = LoadLibrary16( "gdi" );
 100     if (heap_sel >= 32)
 101     {
 102         ptr = (LPWORD)LOCAL_Lock(heap_sel, handle);
 103
 104         /* touch the "system" bit of the wMagic field of a GDIOBJHDR */
 105         if (set)
 106             *(ptr+1) &= ~OBJECT_NOSYSTEM;
 107         else
 108             *(ptr+1) |= OBJECT_NOSYSTEM;
 109         LOCAL_Unlock( heap_sel, handle );
 110     }
 111 }
 112
 113 /*************************************************************************
 114  *             SYSCOLOR_SetColor
 115  */
 116 static void SYSCOLOR_SetColor( int index, COLORREF color )
 117 {
 118     if (index < 0 || index >= NUM_SYS_COLORS) return;
 119     SysColors[index] = color;
 120     if (SysColorBrushes[index])
 121     {
 122         SYSCOLOR_MakeObjectSystem( HBRUSH_16(SysColorBrushes[index]), FALSE);
 123         DeleteObject( SysColorBrushes[index] );
 124     }
 125     SysColorBrushes[index] = CreateSolidBrush( color );
 126     SYSCOLOR_MakeObjectSystem( HBRUSH_16(SysColorBrushes[index]), TRUE);
 127
 128     if (SysColorPens[index])
 129     {
 130         SYSCOLOR_MakeObjectSystem( HPEN_16(SysColorPens[index]), FALSE);
 131         DeleteObject( SysColorPens[index] );
 132     }
 133     SysColorPens[index] = CreatePen( PS_SOLID, 1, color );
 134     SYSCOLOR_MakeObjectSystem( HPEN_16(SysColorPens[index]), TRUE);
 135 }
 136
 137
 138 /*************************************************************************
 139  *             SYSCOLOR_Init
 140  */
 141 void SYSCOLOR_Init(void)
 142 {
 143     int i, r, g, b;
 144     char buffer[100];
 145     BOOL bOk = FALSE, bNoReg = FALSE;
 146     HKEY  hKey;
 147
 148     /* first, try to read the values from the registry */
 149     if (RegCreateKeyExA(HKEY_CURRENT_USER, "Control Panel\\Colors", 0, 0, 0, KEY_ALL_ACCESS, 0, &hKey, 0))
 150       bNoReg = TRUE;
 151     for (i = 0; i < NUM_SYS_COLORS; i++)
 152     { bOk = FALSE;
 153
 154       /* first try, registry */
 155       if (!bNoReg)
 156       {
 157         DWORD dwDataSize = sizeof(buffer);
 158         if (!(RegQueryValueExA(hKey,(LPSTR)DefSysColors[i*2], 0, 0, buffer, &dwDataSize)))
 159           if (sscanf( buffer, "%d %d %d", &r, &g, &b ) == 3)
 160             bOk = TRUE;
 161       }
 162
 163       /* second try, win.ini */
 164       if (!bOk)
 165       { GetProfileStringA( "colors", DefSysColors[i*2], DefSysColors[i*2+1], buffer, 100 );
 166         if (sscanf( buffer, " %d %d %d", &r, &g, &b ) == 3)
 167           bOk = TRUE;
 168       }
 169
 170       /* last chance, take the default */
 171       if (!bOk)
 172       { int iNumColors = sscanf( DefSysColors[i*2+1], " %d %d %d", &r, &g, &b );
 173         assert (iNumColors==3);
 174       }
 175
 176       SYSCOLOR_SetColor( i, RGB(r,g,b) );
 177     }
 178     if (!bNoReg)
 179       RegCloseKey(hKey);
 180 }
 181
 182
 183 /*************************************************************************
 184  *              GetSysColor (USER.180)
 185  */
 186 COLORREF WINAPI GetSysColor16( INT16 nIndex )
 187 {
 188     return GetSysColor (nIndex);
 189 }
 190
 191
 192 /*************************************************************************
 193  *              GetSysColor (USER32.@)
 194  */
 195 COLORREF WINAPI GetSysColor( INT nIndex )
 196 {
 197     if (nIndex >= 0 && nIndex < NUM_SYS_COLORS)
 198         return SysColors[nIndex];
 199     else
 200         return 0;
 201 }
 202
 203
 204 /*************************************************************************
 205  *              SetSysColors (USER.181)
 206  */
 207 VOID WINAPI SetSysColors16( INT16 nChanges, const INT16 *lpSysColor,
 208                             const COLORREF *lpColorValues )
 209 {
 210     int i;
 211
 212     for (i = 0; i < nChanges; i++)
 213     {
 214         SYSCOLOR_SetColor( lpSysColor[i], lpColorValues[i] );
 215     }
 216
 217     /* Send WM_SYSCOLORCHANGE message to all windows */
 218
 219     SendMessageTimeoutW( HWND_BROADCAST, WM_SYSCOLORCHANGE, 0, 0,
 220                          SMTO_ABORTIFHUNG, 2000, NULL );
 221
 222     /* Repaint affected portions of all visible windows */
 223
 224     RedrawWindow( GetDesktopWindow(), NULL, 0,
 225                 RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW | RDW_ALLCHILDREN );
 226 }
 227
 228
 229 /*************************************************************************
 230  *              SetSysColors (USER32.@)
 231  */
 232 BOOL WINAPI SetSysColors( INT nChanges, const INT *lpSysColor,
 233                               const COLORREF *lpColorValues )
 234 {
 235     int i;
 236
 237     for (i = 0; i < nChanges; i++)
 238     {
 239         SYSCOLOR_SetColor( lpSysColor[i], lpColorValues[i] );
 240     }
 241
 242     /* Send WM_SYSCOLORCHANGE message to all windows */
 243
 244     SendMessageTimeoutW( HWND_BROADCAST, WM_SYSCOLORCHANGE, 0, 0,
 245                          SMTO_ABORTIFHUNG, 2000, NULL );
 246
 247     /* Repaint affected portions of all visible windows */
 248
 249     RedrawWindow( GetDesktopWindow(), NULL, 0,
 250                 RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW | RDW_ALLCHILDREN );
 251     return TRUE;
 252 }
 253
 254 /*************************************************************************
 255  *              SetSysColorsTemp (USER32.@)
 256  *
 257  * UNDOCUMENTED !!
 258  *
 259  * Called by W98SE desk.cpl Control Panel Applet:
 260  * handle = SetSysColorsTemp(ptr, ptr, nCount);     ("set" call)
 261  * result = SetSysColorsTemp(NULL, NULL, handle);   ("restore" call)
 262  *
 263  * pPens is an array of COLORREF values, which seems to be used
 264  * to indicate the color values to create new pens with.
 265  *
 266  * pBrushes is an array of solid brush handles (returned by a previous
 267  * CreateSolidBrush), which seems to contain the brush handles to set
 268  * for the system colors.
 269  *
 270  * n seems to be used for
 271  *   a) indicating the number of entries to operate on (length of pPens,
 272  *      pBrushes)
 273  *   b) passing the handle that points to the previously used color settings.
 274  *      I couldn't figure out in hell what kind of handle this is on
 275  *      Windows. I just use a heap handle instead. Shouldn't matter anyway.
 276  *
 277  * RETURNS
 278  *     heap handle of our own copy of the current syscolors in case of
 279  *                 "set" call, i.e. pPens, pBrushes != NULL.
 280  *     TRUE (unconditionally !) in case of "restore" call,
 281  *          i.e. pPens, pBrushes == NULL.
 282  *     FALSE in case of either pPens != NULL and pBrushes == NULL
 283  *          or pPens == NULL and pBrushes != NULL.
 284  *
 285  * I'm not sure whether this implementation is 100% correct. [AM]
 286  */
 287 DWORD WINAPI SetSysColorsTemp( const COLORREF *pPens, const HBRUSH *pBrushes, DWORD n)
 288 {
 289         int i;
 290
 291         if (pPens && pBrushes) /* "set" call */
 292         {
 293             /* allocate our structure to remember old colors */
 294             LPVOID pOldCol = HeapAlloc(GetProcessHeap(), 0, sizeof(DWORD)+n*sizeof(HPEN)+n*sizeof(HBRUSH));
 295             LPVOID p = pOldCol;
 296            *(DWORD *)p = n; p = (char*)p + sizeof(DWORD);
 297            memcpy(p, SysColorPens, n*sizeof(HPEN)); p = (char*)p + n*sizeof(HPEN);
 298            memcpy(p, SysColorBrushes, n*sizeof(HBRUSH)); p = (char*)p + n*sizeof(HBRUSH);
 299
 300             for (i=0; i < n; i++)
 301             {
 302                 SysColorPens[i] = CreatePen( PS_SOLID, 1, pPens[i] );
 303                 SysColorBrushes[i] = pBrushes[i];
 304             }
 305
 306             return (DWORD)pOldCol;
 307         }
 308         if ((!pPens) && (!pBrushes)) /* "restore" call */
 309         {
 310             LPVOID pOldCol = (LPVOID)n;
 311             LPVOID p = pOldCol;
 312             DWORD nCount = *(DWORD *)p;
 313            p = (char*)p + sizeof(DWORD);
 314
 315             for (i=0; i < nCount; i++)
 316             {
 317                 DeleteObject(SysColorPens[i]);
 318                SysColorPens[i] = *(HPEN *)p; p = (char*)p + sizeof(HPEN);
 319             }
 320             for (i=0; i < nCount; i++)
 321             {
 322                SysColorBrushes[i] = *(HBRUSH *)p; p = (char*)p + sizeof(HBRUSH);
 323             }
 324             /* get rid of storage structure */
 325             HeapFree(GetProcessHeap(), 0, pOldCol);
 326
 327             return TRUE;
 328         }
 329         return FALSE;
 330 }
 331
 332 /***********************************************************************
 333  *              GetSysColorBrush (USER32.@)
 334  */
 335 HBRUSH WINAPI GetSysColorBrush( INT index )
 336 {
 337     if (0 <= index && index < NUM_SYS_COLORS)
 338         return SysColorBrushes[index];
 339     WARN("Unknown index(%d)\n", index );
 340     return GetStockObject(LTGRAY_BRUSH);
 341 }
 342
 343
 344 /***********************************************************************
 345  *              SYSCOLOR_GetPen
 346  */
 347 HPEN SYSCOLOR_GetPen( INT index )
 348 {
 349     /* We can assert here, because this function is internal to Wine */
 350     assert (0 <= index && index < NUM_SYS_COLORS);
 351     return SysColorPens[index];
 352
 353 }